Question: What is a crisis that starts with the letter u.
Paraphrase: What could be a emergency that begins with the letter u.
SPARQL (Wikidata): SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q381072 . ?sbj rdfs:label ?sbj_label . FILTER(STRSTARTS(lcase(?sbj_label), 'u')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
Answer: United States debt-ceiling crisis, United States debt-ceiling crisis, United Arab Emirates takeover of Socotra, United Arab Emirates takeover of Socotra